let DChild = (props, ref)=>{
	console.log('DChild', 'render');

	const handleClick1 = () => {
		console.log('DChild', 'handleClick1');
		props.fntest();
	}
	return (
		<div>
			<div onClick={handleClick1}>点击触发子组件事件</div>
			<div>DChild:ms2:{props.ms2}</div>
		</div>
	);
};

export default DChild 